Postmark vs SendLayer (2026): which should you pick?
As of Nov 12, 2026, SendLayer grades higher than Postmark: 2.4 against 2.2 out of 4.0.
Checked Oct 18, 2026 and Nov 12, 2026 · graded Oct 18, 2026 and Nov 12, 2026 by ToolGPA
Postmark grades higher on the free plan and features. SendLayer grades higher on value for money. They get the same grade on ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Postmark
Transactional email API and SMTP, with broadcasts on a separate stream
SendLayer
Transactional email over SMTP or API, aimed at WordPress sites
Which one is for you
Pick Postmark if
- Fits if you want password resets kept on a separate stream from your newsletters
- Works for apps that need to look back at exactly what an email said weeks later
Look elsewhere if
- Pricey if you send 50,000 emails a month, at $55 with no yearly discount
- Skip it if you want a free plan to run a small app on, as it's 100 emails a month with no tier until 10,000
- Tight if you're on Basic, with 4 users, 5 sending domains and no inbound email
- Not for you if you want a dedicated IP below 300,000 emails a month, and each one is $50 a month on Pro or higher
- Watch out: DMARC reports are an add-on from $14 a month per domain
Pick SendLayer if
- Fits if you run a WordPress or WooCommerce site and send order mail
- Works for small senders under 10,000 emails a month
Look elsewhere if
- Skip it if you want a free plan, as there is only a 200-email trial
- Tight if you want to pay monthly, since every plan is billed annually
- Watch out: your plan is upgraded automatically when you reach its monthly email limit
- Not for you if you send marketing campaigns, because it is a transactional service
- Tight if you need long logs, as Starter keeps 3 days
How we grade them
| 2.2GPAPostmarkFair | 2.4GPASendLayerFair | |
|---|---|---|
| Value for money | DGraded on 50,000 emails a month: $55 on Basic or $60.50 on Pro, billed monthly only. That's the dearest in this category at that volume, roughly twice the middle. Bootstrapped companies can ask for $75 of credit. | A$5 a month billed annually for 1,000 emails, under the $6 that is 60% of the category's cheaper quarter. The volume is small and the year is paid up front. |
| Free plan and trial | CA free developer plan that never expires and needs no card, but it's 100 emails a month with no way to buy more. That's for testing an integration, not running an app. | DA trial of up to 200 emails and no permanent free plan; the page does not say whether a card is needed. |
| Features | BAPI and SMTP with SDKs, separate streams for app and bulk email, inbound email turned into JSON, templates, 45 days of message history and DMARC reports as an add-on from $14 a month. It covers the job; inbound needs Pro. | CSMTP and an API, email logs, open and click tracking, suppression and domain authentication, but the listing shows no inbound mail or IP pools and logs last 3 to 30 days. |
| Ease of use | CJudged on how fast a developer sends a first email: official SDKs, a sandbox mode, ready-made templates for resets and receipts, and migration guides. You'll still verify a domain first. No rating on record. | CNo store rating on record. You verify a sending domain with DNS records and wire up SMTP credentials or an API key before the first email goes out. |
| Platforms and integrations | BWeb, with an API and SMTP, plus Zapier, WordPress, Stripe, Slack, Supabase, Bubble, Netlify and Datadog. No desktop or phone app, so B is the top. | BA web dashboard and an API; the listing names WordPress and WooCommerce. |
| Best for | app email kept apart from marketing sends | transactional email for WordPress sites |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Postmark and SendLayer. How we grade
Price against what you get
Postmark starts at $15 a month and scores 2.7 out of 4 on features, ease of use and platforms. SendLayer starts at $5 a month and scores 2.3.
Postmark scores higher, and starts $10 a month higher: the question is whether the extra is worth that to you. Of the other email sending services on the chart, none scores higher than Postmark for less, and 1 scores higher than SendLayer for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Postmark also covers dMARC.
At a glance
| Postmark | SendLayer | |
|---|---|---|
| Pricing | Free plan | Free trial |
| Starts at | $15 per month for 10,000 emails | $5 per month for 1,000 emails, billed annually |
| Free plan | Free developer plan: 100 emails a month with no expiry and no overages, for testing an integration or a small side project. No credit card needed. | None |
| Free trial | None listed | Free trial of up to 200 emails |
| Web | ||
| Made by | ActiveCampaign, LLC | SendLayer, LLC |
| Price read from | postmarkapp.com | sendlayer.com |
| Checked | Oct 18, 2026 | Nov 12, 2026 |
Worth knowing
Postmark
- There is no tier between the free 100 emails a month and the 10,000-email paid plans.
- Billing is monthly only; the FAQ says annual plans are not offered yet.
- Basic has no inbound email processing and caps users at 4 and sending domains at 5.
- Dedicated IPs start at $50 a month per IP, need Pro or higher and 300,000 emails a month or more.
SendLayer
- All plans are billed annually; the pricing page shows no monthly-billing option.
- It has no permanent free plan, only a trial of up to 200 emails.
- Per its FAQ, a plan is upgraded automatically if you reach its monthly email limit.
- It is a transactional email service, not a tool for marketing campaigns.
Key features
Postmark
- Email API and SMTP
- Send through a REST API with official SDKs or through SMTP, with batch sending, a sandbox mode and migration guides from other providers.
- Message streams
- Transactional and bulk or broadcast email run on separate sending infrastructure, so marketing sends do not affect password resets and receipts.
- Inbound email processing
- Pro and Platform turn incoming email into a JSON object and post it to a webhook URL your app handles.
- Templates
- Responsive templates for welcome emails, password resets and receipts, with a template editor and import tool.
- Message history and analytics
- 45 days of full message content by default, adjustable from 7 to 365 days, with bounce details, open and link tracking and a stats API.
- DMARC monitoring
- DMARC Digests reports show authentication problems and who is sending with your domain, sold as an add-on from $14 a month per domain.
SendLayer
- SMTP relay and API
- Every plan can send through an SMTP relay, set up by copying credentials, or through an email API.
- Email logs
- Logs trace each message to its destination. Retention runs from 3 days on Starter to 30 days on Growth and Scale.
- Open and click tracking
- Engagement can be checked per message and filtered by status or recipient, with an analytics view on every plan.
- Suppression and bounce handling
- Suppression, bounce and blocklist management are listed on every plan, along with event-based webhooks.
- Domain authentication
- DKIM, SPF and DMARC authentication are listed on every plan, with a limit on sender domains per plan.
Plans
Postmark
Free$0
100 emails a month, never expires; extra emails cannot be bought on this plan.
Basic$15
per month for 10,000 emails
5 sending domains, 4 users, 45 days of history, no inbound email. Extra emails $1.80 per 1,000; $55 a month at 50,000 emails.
Pro$16.50
per month for 10,000 emails
10 domains, 6 users, inbound email, retention up to 365 days. Extra emails $1.30 per 1,000; $60.50 a month at 50,000 emails.
Platform$18
per month for 10,000 emails
Unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.
High volumeCustom
Custom pricing for large senders, arranged through sales.
SendLayer
Starter$5
per month for 1,000 emails, billed annually
1 sender domain, 3 days of log retention and standard support.
Business$15
per month for 5,000 emails, billed annually
3 sender domains, 15 days of log retention and premium support.
Growth$25
per month for 10,000 emails, billed annually
5 sender domains, 30 days of log retention and premium support.
ScaleCustom
20,000+ emails a month, 20 sender domains, 30 days of logs and VIP support. Quote on request.
Ways to pay less
Postmark
- Startups
$75 credit for bootstrapped companies
Companies that have launched, are charging for their product and have taken no outside investment can ask support for $75 of account credit.
SendLayer
- Other savings
14-day money-back guarantee
The pricing page says that within 14 days of starting, you can ask for a full refund if SendLayer is not a fit.
Common questions
Which is cheaper, Postmark or SendLayer?
As of Nov 12, 2026, SendLayer is cheaper to start with: $5 a month, against $15 a month for Postmark. Postmark starts at $15 per month for 10,000 emails, and SendLayer starts at $5 per month for 1,000 emails, billed annually.
Which has a free plan, Postmark or SendLayer?
As of Nov 12, 2026, only Postmark has a free plan. SendLayer does not, though it has a free trial.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.