EonMailer Integrations · Compare
SendGrid vs SES — pick per client, run both from one desk
Agencies should not force one ESP forever. Use SES when cost and control win; use SendGrid when the client already has an account or wants a classic ESP. EonMailer supports both as BYO.
| Factor | Amazon SES | SendGrid |
|---|---|---|
| Send cost | Usually lowest at scale | Plan / credit based — fine if already paid |
| Setup | AWS account, IAM, sandbox exit | API key + domain auth + scopes |
| Tracking in EonMailer | Configuration Set + SNS | Event Webhook |
| Best when | You want infrastructure economics | Client already on SendGrid / wants ESP UI |
| With EonMailer | Same agency desk: workspaces, approvals, readiness, reports | |
FAQ
SendGrid vs SES questions
Which is cheaper for high volume?
Usually SES at infrastructure rates. SendGrid can still win if the client already pays for a plan or needs ESP features outside EonMailer.
Which is easier for non-technical AMs?
SendGrid often feels more familiar as an ESP. SES is fine when EonMailer guides IAM + sandbox + DNS — many agencies standardize on SES once the path is documented.
Can I use both?
Yes. Different client workspaces can use different providers.
What about Mailgun?
Also live in EonMailer. Choose Mailgun when the client already runs on it or prefers its developer tooling — see the Mailgun integration page.
Connect whichever the client already trusts
Guided setup for both — start on Free and add more workspaces as retainers land.