Alternatives · Email Sending
AuthSMTP alternatives
As of Nov 13, 2026, the best AuthSMTP alternative for most people is Mailjet (2.4 GPA), third in our ranking of email sending services. The best free one is Elastic Email (2.6 GPA). The catch, in its listing's words: "Up to 3,000 emails a month."
AuthSMTP compared with 5 alternatives: SMTP2GO, turboSMTP, SMTP.com, Elastic Email and Mailjet.
AuthSMTP is a paid product, starting at $72 per year for 2,000 emails a month. 4 of the 5 alternatives are free or have a free plan.
Listings checked up to Nov 12, 2026 · Where the facts come from
Black Friday: is there a AuthSMTP sale?
At a glance
Price against what you get
AuthSMTP starts at $6 a month when paid by the year and scores 2.0 out of 4 on features, ease of use and platforms. None of the 5 alternatives on this chart both scores higher and starts lower.
SMTP2GO, SMTP.com, Elastic Email and Mailjet score higher without starting lower.
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
How each one differs from AuthSMTP
SMTP2GO
SMTP relay and email API priced by emails a month, with a free plan
- SMTP2GO starts at $15 per month for 10,000 emails, billed monthly.
- SMTP2GO has a free plan, which AuthSMTP lacks.
Suits: Small businesses sending app or website email at low volume
turboSMTP
SMTP relay and email API on European infrastructure, with a free plan
- turboSMTP starts at $12.46 per month for 15,000 emails, billed annually ($14.95 monthly).
- turboSMTP has a free plan, which AuthSMTP lacks.
- turboSMTP also covers email verification.
Suits: Small senders who fit in 200 emails a day on the free plan
SMTP.com
SMTP relay and email API sold in monthly volume plans from 50,000
- SMTP.com starts at $25 per month for 50,000 emails.
Suits: Senders who already need 50,000 emails a month or more
Elastic Email
Low-cost email API and SMTP relay priced by monthly email volume
- Elastic Email starts at $19 per month for 50,000 emails.
- Elastic Email has a free plan, which AuthSMTP lacks.
- Elastic Email also covers email campaigns and email verification.
Suits: Price-conscious senders of 50,000 emails a month or more
Mailjet
Email API, SMTP relay and campaign editor on one plan priced by volume
- Mailjet starts at $8.10 per month for 8,000 emails, billed annually ($9 billed monthly).
- Mailjet has a free plan, which AuthSMTP lacks.
- Mailjet also covers marketing automation, email campaigns and email verification.
Suits: Teams sending app email and newsletters from one account
Limits worth knowing in AuthSMTP
- Pricing is by the year only, and no free plan or trial is offered.
- The 14-day money-back guarantee ends after 14 days, after 100 messages sent or after an upgrade, and covers new card or PayPal accounts only.
- It is an SMTP relay without a campaign builder or marketing tools.
- Data allowances are calculated on an average message size of 300 KB, which the pricing page lets you change.
Common questions
What are the alternatives to AuthSMTP?
The alternatives to AuthSMTP in this directory are SMTP2GO, turboSMTP, SMTP.com, Elastic Email and Mailjet. Each one has a side-by-side comparison with AuthSMTP.
Is there a free alternative to AuthSMTP?
Yes. SMTP2GO, turboSMTP, Elastic Email and Mailjet have a free plan alongside paid ones.
When were these prices checked?
Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 12, 2026. Vendors change prices without notice, so confirm on their site before you buy.