Mailtrain will help you manage your email campaigns and the marketing list, but isn't going to help with deliverability. If you have SES setup with SPF and DKIM

Mailtrain will help you manage your email campaigns and the marketing list, but isn't going to help with deliverability. If you have SES setup with SPF and DKIM, and you're removing emails from your list when they bounce, Mailtrain isn't going to help your deliverability. Its job is very similar to what Sendy is already doing for you. You could also take a look at Mailgun, which is more expensive than SES but might work better, and Mailtrain has Mailgun integration. In either case, you could look at adding a dedicated IP for your lists, which would help for deliverability, but increase costs: IPs are 24.95 a month on SES, and 59 a month from Mailgun